<template>
    <div class="login-container">
        <!-- 顶部 -->
        <div class="absolute-lt flex-x-end p-3 w-full">
            <el-switch
                v-model="isDark"
                inline-prompt
                active-icon="Moon"
                inactive-icon="Sunny"
                @change="toggleTheme"
            />
            <lang-select class="ml-2 cursor-pointer" />
        </div>
        <!-- 登录表单 -->
        <el-card
            class="!border-none !bg-transparent !rounded-4% w-100 <sm:w-85"
        >
            <div class="text-center relative">
                <h2>{{ defaultSettings.title }}</h2>
                <el-tag class="ml-2 absolute-rt">{{
                    defaultSettings.version
                }}</el-tag>
            </div>

            <el-form
                ref="loginFormRef"
                :model="loginData"
                :rules="loginRules"
                class="login-form"
            >
                <!-- 用户名 -->
                <el-form-item prop="username">
                    <div class="flex-y-center w-full">
                        <svg-icon icon-class="user" class="mx-2" />
                        <el-input
                            ref="username"
                            v-model="loginData.username"
                            :placeholder="$t('login.username')"
                            name="username"
                            size="large"
                            class="h-[48px]"
                        />
                    </div>
                </el-form-item>

                <!-- 密码 -->
                <el-tooltip
                    :visible="isCapslock"
                    :content="$t('login.capsLock')"
                    placement="right"
                >
                    <el-form-item prop="password">
                        <div class="flex-y-center w-full">
                            <svg-icon icon-class="lock" class="mx-2" />
                            <el-input
                                v-model="loginData.password"
                                :placeholder="$t('login.password')"
                                type="password"
                                name="password"
                                @keyup="checkCapslock"
                                @keyup.enter="handleLogin"
                                size="large"
                                class="h-[48px] pr-2"
                                show-password
                            />
                        </div>
                    </el-form-item>
                </el-tooltip>

                <!-- 验证码 -->
                <el-form-item prop="captchaCode">
                    <div class="flex-y-center w-full">
                        <svg-icon icon-class="captcha" class="mx-2" />
                        <el-input
                            v-model="loginData.captchaCode"
                            auto-complete="off"
                            size="large"
                            class="flex-1"
                            :placeholder="$t('login.captchaCode')"
                            @keyup.enter="handleLogin"
                        />

                        <el-image
                            @click="getCaptcha"
                            :src="captchaBase64"
                            class="rounded-tr-md rounded-br-md cursor-pointer h-[48px]"
                        />
                    </div>
                </el-form-item>

                <!-- 登录按钮 -->
                <el-button
                    :loading="loading"
                    type="primary"
                    size="large"
                    class="w-full"
                    @click.prevent="handleLogin"
                    >{{ $t('login.login') }}
                </el-button>

                <!-- 账号密码提示 -->
                <div class="mt-10 text-sm">
                    <span>{{ $t('login.username') }}: admin</span>
                    <span class="ml-4">
                        {{ $t('login.password') }}: 123456</span
                    >
                </div>
            </el-form>
        </el-card>

        <!-- ICP备案 -->
        <div
            class="absolute bottom-1 text-[10px] text-center"
            v-show="icpVisible"
        >
            <p>
                Copyright © 2021 - 2024 youlai.tech All Rights Reserved.
                有来技术 版权所有
            </p>
            <p>皖ICP备20006496号-3</p>
        </div>
    </div>
</template>

<script setup lang="ts">
import AuthAPI from '@/api/auth'
import type { FormInstance } from 'element-plus'
import { LoginData } from '@/api/auth/model'
import { useSettingsStore, useUserStore } from '@/store'
import defaultSettings from '@/settings'
import { ThemeEnum } from '@/enums/ThemeEnum'
import { LocationQuery, LocationQueryValue } from 'vue-router'
import router from '@/router'
// store
const settingsStore = useSettingsStore()
const { t } = useI18n()
const route = useRoute()
const userStore = useUserStore()
// state
const loginData = ref<LoginData>({
    username: 'admin',
    password: '123456',
})
const icpVisible = ref(true)
const isDark = ref(settingsStore.theme === ThemeEnum.DARK)
const isCapslock = ref(false) // 是否大写锁定
const loginFormRef = ref<FormInstance>() // 登录表单ref
const loading = ref(false) // 按钮loading
const captchaBase64 = ref() // 验证码图片Base64字符串
// computed
const loginRules = {
    username: [
        {
            required: true,
            trigger: 'blur',
            message: t('login.message.username.required'),
        },
    ],
    password: [
        {
            required: true,
            trigger: 'blur',
            message: t('login.message.password.required'),
        },
        {
            min: 6,
            message: t('login.message.password.min'),
            trigger: 'blur',
        },
    ],
    captchaCode: [
        {
            required: true,
            trigger: 'blur',
            message: t('login.message.captchaCode.required'),
        },
    ],
}

// action
/** 主题切换 */
const toggleTheme = () => {
    const newTheme =
        settingsStore.theme === ThemeEnum.DARK
            ? ThemeEnum.LIGHT
            : ThemeEnum.DARK
    settingsStore.changeTheme(newTheme)
}
/** 检查输入大小写 */
function checkCapslock(event: KeyboardEvent) {
    // 防止浏览器密码自动填充时报错
    if (event instanceof KeyboardEvent) {
        isCapslock.value = event.getModifierState('CapsLock')
    }
}
/** 登录 */

function handleLogin() {
    loginFormRef.value?.validate((valid: boolean) => {
        if (valid) {
            loading.value = true
            userStore
                .login(loginData.value)
                .then(() => {
                    const query: LocationQuery = route.query
                    const redirect =
                        (query.redirect as LocationQueryValue) ?? '/'
                    const otherQueryParams = Object.keys(query).reduce(
                        (acc: any, cur: string) => {
                            if (cur !== 'redirect') {
                                acc[cur] = query[cur]
                            }
                            return acc
                        },
                        {}
                    )

                    router.push({ path: redirect, query: otherQueryParams })
                })
                .catch(() => {
                    getCaptcha()
                })
                .finally(() => {
                    loading.value = false
                })
        }
    })
}
/** 获取验证码 */
function getCaptcha() {
    AuthAPI.getCaptcha().then((data) => {
        // console.log('----data---', data)
        loginData.value.captchaKey = data.captchaKey
        captchaBase64.value = data.captchaBase64
    })
}

// 生命周期
onMounted(() => {
    getCaptcha()
})
</script>

<style lang="scss" scoped>
html.dark .login-container {
    background: url('@/assets/images/login-bg-dark.jpg') no-repeat center right;
}

.login-container {
    overflow-y: auto;
    background: url('@/assets/images/login-bg.jpg') no-repeat center right;

    @apply wh-full flex-center;

    .login-form {
        padding: 30px 10px;
    }
}

.el-form-item {
    background: var(--el-input-bg-color);
    border: 1px solid var(--el-border-color);
    border-radius: 5px;
}

:deep(.el-input) {
    .el-input__wrapper {
        padding: 0;
        background-color: transparent;
        box-shadow: none;

        &.is-focus,
        &:hover {
            box-shadow: none !important;
        }

        input:-webkit-autofill {
            /* 通过延时渲染背景色变相去除背景颜色 */
            transition: background-color 1000s ease-in-out 0s;
        }
    }
}
</style>
